focus attention on (something)

Translations
сосредоточить внимание на (чем-то)
The teacher asked the students to focus their attention on the board.
Учитель попросил учеников сосредоточить внимание на доске.
Definitions
To direct one's mental effort or concentration towards a specific task, object, or subject.
Words
attention

noun
внимание
focus

verb
сосредоточиться